Perhaps you should try some spelling variations:
thien van » thi van
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cua triet, dua tren
sach ky » sac ky, sach ty, sach kem
cac tac » cac toc, cac bac, cac dac
van cac » van hac, van cau, van bac
lang xa » lang ha, dang xay, lang van
cuu tre » cau tren, cau treo
tac va » tac da, tac xa, tuc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) OR (sach y)) lang xa hoi. thien van cac tac va thanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach y)) lang xa hoi. thien van cac tac va thanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach y)) lang xa hoi. thien van cac tac va thanh vi ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sach y)) lang xa hoi. thien van cac tac va thanh vi ((cua tre) or (cuu tre))*.